Top Rated Plus freelancer since 2019! Full Stack Engineer with 11+ years of experience building SaaS products, modernizing legacy systems, and delivering production web applications with Node.js, NestJS, React, Next.js, and TypeScript. I work across the full stack, with Node.js / NestJS on the backend and React / Next.js on the frontend, and also with MERN stack. Most of my work is not just building isolated features. It is taking a product from idea to production, modernizing legacy systems, improving architecture, cleaning up hard-to-maintain logic, and making sure the system is practical to operate and extend long term. I usually help clients with custom SaaS platforms, admin panels, dashboards, CMS, API integrations, automations, and workflow-heavy applications. I also build real-time features when the product depends on fast updates and event-driven behavior. When needed, I can add LLM features, build RAG pipelines, improve retrieval and embedding strategy, and design multi-agent workflows. One example: in my Oktogon Media work history, I helped design and deliver a custom CMS for multi-site content management that replaced several legacy CMS instances. The platform was built with React, Next.js, Node.js, NestJS, MongoDB, MySQL, Docker, Kubernetes, and AWS. As part of that work, I built ETL processes to migrate production data from a commercial CMS into the new platform. The new public frontend became 4x faster and met Lighthouse criteria, while the overall system made content operations more efficient and made new site launches easier. Another example: I built a queue management product from scratch using React, PostgreSQL, and Node.js. It includes real-time updates through socket events and priority-based event logic, and the system is used at Briuta Medical Center. My strengths are a product-oriented mindset, transparent communication, and practical decision-making. I think like a product owner, not just an implementer, so I tend to spot risks early, suggest improvements, and keep the work aligned with the business goal. I’ve worked across Healthcare, EdTech, learning systems, SaaS, media/content platforms, API integrations, and automations, but I’m open to strong products in any domain. If you need a senior full stack engineer who can build, modernize, and help move the product in the right direction, feel free to reach out. If you are impressed by my experience, but can't afford the hourly price, - contact me, and we can negotiate it and find a way to deliver to you the best quality at the market.

I'm a UI UX Designer with 6+ years of practice in UX & UI Design, helping SaaS, EdTech, and AI-driven products ship intuitive, conversion-focused interfaces. ⭐⭐⭐⭐⭐ "Andrii is a fantastic designer with strong UX intuition and excellent Figma skills." (recent client review) 🎯 What I bring to your product as a UI UX Designer UIUX Designer: ✔️ As a UI UX Designer, I lead end-to-end product design: discovery, user research, wireframing, hi-fi UI in Figma, interactive prototyping, developer handoff. ✔️ As a UI/UX Designer, I specialize in SaaS web apps, AI-powered products, mobile apps (iOS & Android), and high-converting landing pages. ✔️ As a UIUX Designer, I build atomic design systems and component libraries that scale across multi-screen products. ✔️ As a UX/UI Designer, I work daily with React/Next.js engineering teams. My designs ship without rework. ✔️ As a UI & UX Designer, I deliver in Figma with developer-ready specs (responsive breakpoints, hover states, design tokens). 📊 Verified UI UX Designer work: 🔶 Notesight AI EdTech AI Notetaking: brand identity, mobile app UI, landing page (Loom walkthrough on request). 🔶 MyAnswer AI: AI Q&A platform mobile UI. 🔶 ReRick: mobile commerce experience. 🔶 SalesHub: sales team CRM dashboard. ▪ 6+ years of UI UX Design experience ▪ 50+ successful design projects shipped ▪ 100% Job Success Score on Upwork ▪ Top Rated Plus (via 2muchcoffee LLC agency) ▪ Daily Figma user (auto-layout, components, design tokens, dev handoff) ▪ Real engineering collaboration with a 2muchcoffee React/Next.js dev team 🤝 Let's Build Something Great Looking for an experienced UI/UX Designer UI UX Designer UIUX Designer UXUI Designer who ships production-quality Figma designs? Click "Invite" or "Message" to discuss your project goals. UI UX Designer, UIUX Designer, UI/UX Designer, UX/UI Designer, UI & UX Designer, Figma Designer, SaaS UI UX Designer, Mobile UI UX Designer, AI Product UI UX Designer, Landing Page UI UX Designer, EdTech UI UX Designer, Design System Designer, Web App UI UX Designer, Mobile App UI UX Designer, Conversion-Focused UI UX Designer, UI UX Designer Figma, UX Researcher, UI Designer, UX Designer

Need a custom LMS, a high-performance mobile app, or a rock-solid SCORM/xAPI integration? As a full stack developer and web developer specializing in EdTech, I bridge the gap between complex eLearning backends and seamless cross-platform app development. With 9+ years of hands-on experience, I focus exclusively on educational technology and LMS platforms. I don’t just build software; I deliver compliant, scalable ecosystems that combine powerful web architecture with intuitive mobile app experiences for iOS and Android. Through my partnership with Greenice (Top Rated Plus agency), I offer unique scalability. I can handle solo elite development or bring in a full-cycle engineering team (UI/UX, QA, DevOps) depending on your project size. ⚡ What I Can Build & Fix For You: • Mobile App Development: Cross-platform iOS & Android deployment using react native or Flutter, featuring advanced offline mode, interactive push notifications, and mobile-first learning UI. • Web Developer & LMS Portals: Robust backends (Laravel, Node.js) featuring custom course builders, assessments, automated reporting, user roles, and CRM/HR/SSO integrations. • eLearning Standards Compliance: Flawless implementation and debugging of SCORM 1.2 / 2004, xAPI (Tin Can), LTI, and OAuth2 secure authentication. • Interactive & Gamified Content: Custom learning players, microlearning modules, and real-time analytics dashboards. 🛠️ Core Tech Stack & Expertise: • Mobile App Development: react native, flutter developer tools, iOS & Android deployment • Web Developer & Frontend: React, JavaScript, TypeScript, TailwindCSS, Responsive Web • Full Stack Developer Backend: Laravel, Node.js, PostgreSQL, MySQL, Redis • EdTech Protocols: SCORM, xAPI, LTI, REST APIs Let's turn your educational vision into a scalable product. Message me to discuss your project requirements or to schedule a technical consultation!

Hello, Future Partner! I am an Expert Full-stack WordPress Developer from Ukraine with over 10 years of experience in crafting visually stunning, high-performance websites and landing pages tailored to your business needs. Whether you're aiming to establish a dynamic blog, launch a thriving e-commerce store, or create a compelling landing page to boost conversions, I'm here to help. I understand the importance of a captivating online presence to drive customer engagement and conversions. My approach prioritizes aesthetics, speed, and functionality, ensuring that your website not only looks great but also delivers seamless user experiences and effectively drives sales. Partner with me to: Elevate your online presence Propel your business to new heights Create a website that captures attention and inspires action ⭐️ My Skills: ✔️ Programming Languages: PHP, JavaScript ✔️ Frameworks: Laravel, YII, Symfony ✔️ CMS: WordPress (WooCommerce), OpenCart, Shopify ✔️ Databases: MySQL, SQLite, PostgreSQL, Firebase, NoSQL, T-SQL ✔️ APIs: XML, JSON, REST ✔️ Front-end: CSS, HTML, SASS, LESS, Bootstrap ✔️ JavaScript Frameworks: Angular, Node.js, Vue.js, Ionic, React, Next.js ✔️ Version Control: Git, Bitbucket ✔️ Project Management: Trello, Jira, Podio, Asana, Basecamp ✔️ Operating Systems: Windows, Linux, MacOS I am committed to delivering projects on time and bringing them to a successful conclusion. Let's collaborate and create something exceptional together!

Most AI projects fail because the infrastructure around them wasn't built to last. I'm an AI developer and Python developer who fixes that. I build RAG pipelines, AI Agent systems, and the backend architecture they need to actually run in production. When a project demands it, I bring in a trusted Python developer I've worked with long-term. Having a second Python developer and a second AI developer on call means you get the output of a full team without the overhead of managing one. 1. AI Systems That Go Beyond the Prototype As an AI developer, I design and implement custom RAG (Retrieval-Augmented Generation) pipelines that ground your LLMs in proprietary data: eliminating hallucinations and making responses genuinely useful. I build autonomous AI Agent frameworks that execute multi-step workflows without human input. Whether that means PyTorch for a custom machine learning model, TensorFlow for a deployment-optimized pipeline, or combining PyTorch and TensorFlow across different stages of the same system or computer vision for document parsing and image classification — I choose the right tool, not the trendiest one. My data scientist background means I treat model evaluation as seriously as model building. Nothing ships until the benchmarks prove it works. Every web development project I deliver goes through the same data scientist discipline: measure, validate, ship. 2. The Backend That Holds It Together A great AI developer still needs solid engineering underneath. As a Python developer, I build the infrastructure that makes AI systems reliable at scale: FastAPI and Django REST APIs, Flask microservices for lightweight integrations, Flask-based task queues for async jobs, PostgreSQL and MySQL schemas built for real data volumes, SQL queries optimized for performance, Docker-containerized services deployed through CI/CD pipelines with Git-managed version control. Data Scraping and web scraping are core to how I keep models current. I build Scrapy pipelines that continuously pull structured data from the web and load it into PostgreSQL or MySQL. That means your AI developer's models are always working with fresh information. I also use Scrapy for competitive research and e-commerce intelligence. Airtable provides non-technical stakeholders visibility into those Data Scraping pipelines, and Airtable webhooks trigger FastAPI or Django endpoints when records change. 3. Full Stack, Front to Back I'm a full stack developer and web developer, which means I own the entire delivery. React dashboards, Node.js middleware, JavaScript-heavy interfaces. I build the frontend that makes AI outputs accessible to real users. As a software engineer with web development experience across the full stack, I keep React components, Node.js services, and JavaScript logic clean and maintainable alongside the Python backend. I also have PHP developer experience. Many clients have existing PHP developer codebases, legacy CMS platforms, older systems that need to connect to modern Python APIs rather than be replaced. I know how to work with what's already there. 4. What Working With Me Looks Like You get a Python developer and AI developer in one person, backed by a trusted Python developer when the scope demands it. You get production-ready code - documented, tested, Git-managed, containerized with Docker, deployed through CI/CD. You get a data scientist mindset applied to every decision, a software engineer's standards applied to every line, a full stack developer's awareness of the full delivery chain, and a web developer's understanding that the end user is always the point. If you need an AI developer and Python developer who can take a project from first conversation to live deployment, I'd like to hear about it.

I'm a full stack developer specializing in AI Application Development with 8+ years of experience building web applications, SaaS platforms, and WordPress solutions. As an App Developer with AI at the core of my stack, and as an AI Integrator who plugs intelligence into existing products, I help startups, agencies, and growing businesses turn ideas into reliable, scalable AI-powered systems. The result: faster time-to-market, lower costs, and software that grows with your business. AI Application Development | App Developer with AI | AI Integrator | Building Powerful, Scalable Applications I've delivered 100+ projects across web, SaaS, and AI Application Development. I've shipped 20+ production web applications and launched 15+ multi-tenant platforms that scale from day one. As an experienced App Developer with AI, I bring the complete package - React, Python, machine learning, and front-end skills, everything needed to launch and grow your product. WHY CHOOSE ME My approach to AI Application Development covers the complete spectrum of building intelligent products, with development cycles up to 3x faster than typical timelines. As an App Developer with AI, I've shipped features that real users rely on every day, and as an AI Integrator I've connected LLMs, APIs, and automation into products that were never designed for them. As a web developer, I've cut load times by up to 60% on the sites I've optimized. FRONTEND EXCELLENCE As a dedicated React developer and front-end developer, I create interfaces users love: • React, Next.js, TypeScript, Redux - dynamic UIs with 2x faster rendering • Component-based architecture - 200+ reusable components • Mobile-first compatibility and web design that converts BACKEND ENGINEERING My backend proficiency ensures secure, scalable apps: • Node.js, Express.js, Python - APIs with 99.9% uptime • MongoDB, PostgreSQL, MySQL - sub-50ms query times • Prisma, Sequelize, Knex.js I make sure the backend matches frontend quality - the foundation every intelligent product needs. AI AND INTELLIGENT FEATURES My AI Application Development work, and my day-to-day as an App Developer with AI, includes: • LLM integration - OpenAI, Anthropic, and open-source models • Natural language processing and chat interfaces • Machine learning pipelines in production • RAG, embeddings, and vector search As an AI Integrator, I specialize in wiring these capabilities into products that already exist, with no rebuild required. MOBILE AND CROSS-PLATFORM As a mobile app developer, I deliver: • React Native for iOS and Android • Progressive Web Apps with offline capabilities • Cross-platform solutions reducing development time by 50% WORDPRESS AND CMS • Custom theme and plugin development • WooCommerce e-commerce solutions • Performance optimization achieving 90+ PageSpeed scores SAAS DEVELOPMENT AND INFRASTRUCTURE I bring scale-ready infrastructure to every build: • Docker and Kubernetes - 75% faster deployment • CI/CD pipelines - catching 90% of issues early • AWS, Vercel, DigitalOcean expertise • Multi-tenant architecture design I've designed multi-tenant systems that handle 10,000+ accounts without a drop in performance, every AI Application Development project built to scale. As an AI Integrator, I keep your AI workloads fast and cost-efficient under real traffic. ADVANCED FEATURES • WebSockets - real-time updates within 100ms • Redis caching - 30x faster response times • Stripe integration, OAuth2, JWT authentication As an AI Integrator, I wire analytics and automation together so growth tracking is intelligent from launch, not bolted on later. SERVICES I OFFER • AI Application Development, intelligent features in production • App Developer with AI, end-to-end product builds • AI Integrator, intelligence added to existing systems • Web and SaaS development, React, WordPress, mobile apps • MVP development, 40% faster time-to-market • API design, 50% faster integration YOUR PROJECT DESERVES COMMITMENT When you hire me, you get: • 2-hour response time during working hours • 100% client satisfaction across 100+ completed projects • A professional App Developer with AI fully invested in your outcome LET'S BUILD SOMETHING EXTRAORDINARY I deliver measurable results in AI Application Development that has helped 50+ clients ship products that grow. As an experienced App Developer with AI and a proven AI Integrator, I'd love to discuss your project.

⭐️ Top Rated Plus — Top 3% of talent on Upwork ✅ 11+ years of professional experience ✅ 40+ projects successfully delivered 📈 Boosted client productivity by up to 70%, supporting platforms with 100k+ users ⚡ Improved application loading speed by 30–50% ✅ $50M+ in client revenue supported through the platforms I’ve built ✅ 90%+ repeat client rate I’m a Full Stack Developer, Web Developer, and React Developer with more than 11 years of hands-on experience building scalable, high-performance web and mobile applications. My core strength lies in Node.js backend engineering combined with React / React.js frontend development, allowing me to deliver complete, production-ready systems from database to UI. As a Full Stack Developer, I work across the entire application lifecycle — from backend logic and APIs to frontend interfaces and performance optimization. As a Web Developer, I focus on reliability, maintainability, and long-term scalability. As a React Developer, I build fast, interactive user interfaces that feel smooth and intuitive across devices. I work with startups and companies building AI-driven SaaS platforms, AI automation systems, conversational assistants, and internal AI tools. 🔧️ CORE TECHNICAL EXPERTISE 📌 AI Integration & AI Agent Development — OpenAI / LLM / Conversational AI As an AI Developer and Full Stack Developer, I design and implement AI-powered systems using modern LLM technologies and AI APIs. My work includes AI agent architectures, conversational AI systems, AI copilots, and AI workflow automation. I integrate platforms like OpenAI, GPT, Claude, and other LLM providers into SaaS products and internal tools. This includes RAG pipelines, knowledge base ingestion, tool-calling agents, AI assistants, and AI automation workflows. I also build real-time AI systems, including voice AI applications using streaming APIs, speech-to-text (ASR), and text-to-speech (TTS). 📌 Backend Development — Node.js / TypeScript / API Architecture As a Backend Developer and Full Stack Developer, I design scalable server-side systems using Node.js, TypeScript, Nest.js, and Express.js. As a Full Stack Developer and Web Developer, I design and implement server-side systems using Node.js, building REST and GraphQL APIs, background jobs, and service-based architectures. My experience includes authentication flows, authorization layers, data validation, logging, error handling, and API versioning — all written with clarity and long-term support in mind. I focus on building clean, maintainable backend architectures that support long-term product growth. 📌 Frontend Development — React / Next.js / Modern Web Applications As a React Developer and Full Stack Developer, I build modern user interfaces and SaaS platforms using React, Next.js, TypeScript, and Tailwind. As a React Developer and Web Developer, I create single-page applications and complex dashboards using React. I focus on clean component structure, predictable state management, responsive layouts, and performance-conscious rendering. My React work supports both web platforms and mobile-focused interfaces. I design frontend systems that integrate seamlessly with AI services, APIs, and backend platforms. 📌 Database Architecture — PostgreSQL / Supabase / MongoDB / Redis Experienced Full Stack Developer working with modern database systems including PostgreSQL, MySQL, MongoDB, Supabase, and Redis. Experienced Full Stack Developer working with PostgreSQL, MySQL, and MongoDB, including schema design, indexing strategies, query optimization, and data migration. I ensure backend systems remain efficient under growth and high traffic. I ensure backend systems remain stable and scalable under high traffic and growing data volumes. 📌 Cloud & Infrastructure — AWS / Docker / Cloud Platforms As a Full Stack Developer and AI Integration Engineer, I deploy and maintain applications in cloud environments. As a Web Developer and Full Stack Developer, I deploy and maintain applications on AWS, using services such as EC2, ECS, S3, CloudFront, and CI/CD pipelines. I manage environments, automate deployments, and ensure applications scale reliably. My goal is to build reliable infrastructure that supports production AI applications and SaaS platforms. 📌 API & Platform Integrations I develop and integrate REST APIs, external services, and automation platforms using Node.js. I build and integrate RESTful and GraphQL APIs using Node js, connecting payment gateways, OAuth 2.0 providers, external services, and internal systems. These APIs are consumed by React applications and mobile interfaces built by me as a React Developer and Web Developer. 💥 WHAT I CAN DO FOR YOU ✅ Build AI-powered applications and AI agents ✅ Integrate OpenAI / GPT / Claude APIs into SaaS platforms ✅ Develop scalable Node.js backend services ✅ Build modern React / Next.js applications ✅ Implement RAG pipelines and AI knowledge systems ✅ Design full-stack SaaS architecture

I'm a UI UX Designer with 9+ years of experience designing SaaS platforms, web apps, mobile apps, dashboards, and high-converting landing pages for startups and growing businesses. Trusted by $1M+ startups and companies like Kloudip, Grip, and Ngenius across SaaS, eCommerce, Logistics, Fitness & Healthcare, Real Estate, AI, and Cybersecurity. ⭐️⭐️⭐️⭐️⭐️ What clients say about me: “Sasha transformed complex cybersecurity workflows into a clean, intuitive UI UX experience that exceeded expectations and helped increase platform engagement by 40%+. Great communication, fast turnaround, and strong attention to detail throughout the project.” — Shea, Founder, Cybersecurity Awareness Training Company 🎯 What I bring to the table as a UI UX Designer: ✔️ 9+ years of experience in UI UX Design, Web Design, Mobile App Design, and SaaS product design. ✔️ Conversion-focused UX UI Design that improves usability, engagement, retention, and business growth. ✔️ Expertise designing SaaS platforms, dashboards, web apps, mobile apps, MVPs, marketplaces, and landing pages. ✔️ High-fidelity UI design in Figma, including wireframing, prototyping, responsive design, and scalable design systems. ✔️ Strong UX thinking focused on simplifying complex workflows into intuitive user experiences. ✔️ Experience designing compliance-aware and accessibility-focused interfaces, including HIPAA-sensitive workflows and WCAG 2.1 AA standards. ✔️ Clear communication, fast turnaround, and seamless collaboration with founders, developers, and product teams. My recent projects and achievements: 🔶 UI UX Designer for a Logistics SaaS Platform ▪ Modernized a legacy TMS & ERP system, improving operational efficiency by 40%. ▪ Built a scalable Figma design system that accelerated product updates and improved UI consistency. ▪ Simplified logistics workflows, helping teams complete tasks faster with fewer errors. 🔶 UI UX Designer for an AI SaaS Platform ▪ Transformed a complex AI workflow into an intuitive drag-and-drop UX, reducing onboarding friction by 58%. ▪ Designed scalable web app interfaces in Figma for non-technical users. ▪ Improved task completion rates through streamlined user flows and simplified interactions. 🔶 UI UX Designer for a Fitness Mobile App ▪ Designed a mobile app experience that increased user engagement and 2x retention. ▪ Simplified onboarding and workout tracking flows to reduce user drop-off. ▪ Delivered high-fidelity Figma prototypes for faster stakeholder approval and development. 🔶 UI UX Designer for an eCommerce Marketplace Platform ▪ Redesigned the marketplace experience, increasing user engagement by 45%. ▪ Optimized checkout and vendor flows to improve usability and conversions. ▪ Built a scalable responsive design system in Figma for consistent UI across the platform. My UI UX design expertise includes: UI UX Design • UX UI Design • SaaS Design • Web App Design • Mobile App Design • Dashboard Design • Landing Page Design • Responsive Web Design • Wireframing • Prototyping • Design Systems • Figma Design • MVP Design • eCommerce Design • Conversion Rate Optimization • Website Redesign • Product Design Whether you need a SaaS dashboard, web app, mobile app, landing page, MVP, or a complete UI UX redesign - I’m here to help you create a product experience that users enjoy and businesses grow from. Drop me a message to discuss ☎️

Searching for Senior Full Stack developer for your SaaS platform❓I’m a Senior Full Stack Developer React Node Next.js with 5+ years of experience building and scaling SaaS platforms, dashboards, API integrations and web applications improvements. 🌟 My key highlights: 🏆 Senior Full Stack Developer React Node Next.js 🏆 Full Stack SaaS Developer who can take full ownership on your project 🏆 Delivered 30+ SaaS platforms and web applications from MVP to production 🏆 Strong problem-solving skills with experience working in fast-paced startup environments 🏆 Strong communication skills in English for clear collaboration with teams and clients 💡 What I can bring as Full Stack Developer: 🗸 Full Stack development (React Node, MERN Stack) 🗸 SaaS platform developer for architecture and scaling 🗸 REST API and GraphQL API development 🗸 API integrations (payments, analytics, third-party services) 🗸 Performance optimization and system stability 🗸 Clean, maintainable code and long-term product thinking 🗸 Development of internal tools and workflow platforms for business processes 🗸 Integrations with messaging systems (WhatsApp, Twilio) and email services 🚀 Relevant product experience: As a Full Stack developer SaaS oriented, I focus on development SaaS platforms and web applications across: 🗸 Logistics & Supply Chain – Complex tracking and data systems. 🗸 Fintech – Secure Fintech platforms and financial apps. 🗸 E-commerce – Marketplaces, online shops, and trading platforms. 🗸 Real Estate – Real Estate Platform, Marketplaces and advanced booking systems. 🗸 Travel – Booking platforms with map integrations (Google Maps, Mapbox). 🗸 Education – E-Learning platforms, LMS, and online courses. ⚙️ Tech stack ⚙️ As a Full Stack Developer and SaaS Developer, I work with: ⚙️ Languages – JavaScript, TypeScript, Python, PHP ⚙️ Front-End Development – React.js, Next.js, Redux, HTML5, CSS3, Canvas ⚙️ Back-End Development – Node.js, NestJS, Express, WordPress ⚙️ UI & Styling – Tailwind CSS, Material UI, Bootstrap, shadcn/ui, SCSS, SASS, LESS ⚙️ API Integration – RESTful APIs, GraphQL APIs, Webhooks, OpenAI API, Claude API, Stripe API ⚙️ Databases – PostgreSQL, MySQL, MongoDB, Supabase, Firebase ⚙️ Cloud & Infrastructure – AWS S3, AWS Lambda, Google Cloud, Microsoft Azure, Vercel, DigitalOcean, Docker, Kubernetes ⚙️ DevOps & Quality – CI/CD (GitHub Actions, GitLab CI), Testing (Jest, Playwright), Monitoring (Sentry), Logging ⚙️ Version Control – Git (GitHub, GitLab, Bitbucket) ⚙️ Design Tools – Figma, Adobe XD, Sketch As a Full Stack developer React Node and SaaS Developer I have a strong understanding of SaaS development in both front-end and back-end technologies and have experience in developing scalable web applications, SaaS platforms, SaaS dashboards, analytics systems, Progressive Web Applications (PWA), authentication systems (OAuth, JWT), and API-driven solutions. I support products through early MVP development, feature expansion, and long-term iteration across web and SaaS applications. As a result oriented Full Stack developer React Node and SaaS developer at Si Development, I’ve collaborated with different amount of teams and developers, as: Python developer, full stack developer laravel vue, wordpress developer, Ruby on Rails developer, mobile app developer, cms developer, react native developer, ux designer, CTO, Senior Web Developer, Software developer, MERN Stack developer, another React Developer and Front End developer React, etc. As a Full Stack developer, I supported growth initiatives in SaaS marketing, SaaS sales, digital marketing, and Google Ads, managing communications across teams and markets including Nigeria, and coordinating with roles such as Graphic Designer, Virtual Assistant, Personal Stylist, while contributing to mobile app design. I also use AI-assisted development tools (Cursor, Codex, Claude Code) to improve development speed and code quality. If you’re looking for a Full Stack Developer React Node or SaaS Developer who understands how to build and evolve real products, I’d be happy to discuss your project goals and technical requirements.

⭐⭐⭐⭐⭐ "The final result and customer satisfaction exceed expectations" - Gleb Goloborodko, Founder, GetCode ⭐⭐⭐⭐⭐ "Their team respects our internal situation while being proactive towards upcoming issues" - Pavol Norulak, Managing Director & Co-Founder, NSI I help product teams build backend systems that scale cleanly - multi-tenant SaaS platforms, B2B product backends, eCommerce infrastructure, and async event-driven architectures that stay reliable when traffic, data, and requirements grow. 𝗪𝗵𝘆 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 𝗰𝗵𝗼𝗼𝘀𝗲 𝘁𝗼 𝘄𝗼𝗿𝗸 𝘄𝗶𝘁𝗵 𝗺𝗲 • Architecture-first thinking - the right design decision on day one prevents expensive rewrites later • Milestone-based delivery with demos and documentation at every stage - no black-box development • Early risk identification - scope and budget issues surfaced before they become problems • One senior developer who also manages the project - clear communication, no handoffs, no surprises • Long-term technical partnership mindset - accountable for outcomes, not just code delivery • Production-ready from day one: test coverage, CI/CD, structured logging, error monitoring Over 8 years, my team at Angle2 and I have shipped SaaS platforms, marketplaces, CRMs, B2B portals, analytics platforms, job boards, and payment-integrated products across fintech, eCommerce, and enterprise software - on time, within scope, with full documentation. My 14+ years in project management means you get senior development combined with predictable delivery 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 & 𝗦𝗮𝗮𝗦 𝘀𝘆𝘀𝘁𝗲𝗺𝘀 • SaaS & B2B backends: multi-tenant architecture, tenant isolation, row-level security, role-based access control, OAuth / authentication, audit logging • eCommerce & marketplace systems: product catalogues, order management, inventory, payment flows, webhook event handling • Payment integrations: Stripe Connect (Standard & Express), subscription billing, split-payment flows, async webhook handling • APIs: Django REST Framework, FastAPI, RESTful API design, REST API, third-party integrations (Stripe, Twilio, OpenAI, Gmail API) • Async systems: AsyncIO, Celery, Redis, background workers, job scheduling, distributed event processing • Data processing: ETL pipelines, web scraping, PDF/document parsing, bulk CSV ingestion, data workflows • Cloud & DevOps: AWS, GCP, Azure, Docker, CI/CD (GitHub Actions, GitLab CI), structured logging, error monitoring 𝗔𝗜 & 𝗟𝗟𝗠-𝗽𝗼𝘄𝗲𝗿𝗲𝗱 𝘀𝘆𝘀𝘁𝗲𝗺𝘀 • Intelligent assistants and AI-powered features using LangChain, OpenAI API, and RAG pipelines • Vector search and semantic retrieval: FAISS, Pinecone, vector database integrations • LLM workflows integrated into structured backend APIs with production stability • System architecture for AI-enabled products - reliable, scalable, maintainable 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 • SaaS MVP development - system architecture through production-ready deployment • Multi-tenant platform builds - data isolation, tenant management, subscription tiers • eCommerce backend development - marketplace logic, inventory, fulfilment integrations • Payment system integration - Stripe Connect, subscription billing, webhook pipelines • AI / LLM integration - LangChain, RAG pipelines, vector search, OpenAI API • Backend architecture audits and implementation roadmaps • PostgreSQL schema design and query optimisation • Django to FastAPI migration planning • AWS / GCP cloud architecture review and cost optimisation • CI/CD pipeline setup - production-ready from day one My background is senior Python backend development - 8 years of building SaaS platforms, B2B product backends, and eCommerce infrastructure using FastAPI, Django REST Framework, AsyncIO, Celery, PostgreSQL, Redis, AWS, and GCP. I focus on projects where architecture matters from day one - multi-tenant SaaS platforms, marketplace backends, B2B portals, and eCommerce systems where scale and reliability are not optional. Beyond core backend work, I integrate LangChain, RAG pipelines, and OpenAI API into production systems - built to be stable, maintainable, and part of a real product rather than a prototype. If you are building a SaaS platform, a marketplace, a B2B portal, or a payment-integrated product and need a senior Python backend developer who manages the delivery end to end - I would like to hear about it.